① world premiere! The domestic giant double 10 Gigabit network technology has been successfully verified and its performance has been improved by 10 times. it will provide ultra-high-speed network capability base for industrial robots, holographic communications and other scenarios. This company already has related hardware platform products and has won many bids for China Mobile procurement projects. ② "Sodium batteries have been shipping normally and there will be more shipments this year," and analysts expect industry demand to double next year. The company has just announced plans to raise all funds for sodium ion battery projects. ③ overseas Mapping: the United States plans to invest US $11 billion in this new energy project, and the share prices of many core technology companies in the field are at new highs. What are the related companies in A shares?